Two teenagers who held a knife to Gregg Smart's neck and shot him in the head in 1990 have become free middle-aged men after serving a quarter-century in prison. William Flynn was the triggerman and Smart's lover. He was 16 and known as "Billy" when he and three friends participated in what prosecutors said was Pamela Smart's plot to kill her husband in Derry, New Hampshire.
Patrick "Pete" Randall restrained Gregg Smart and held a knife to his neck during the killing. Both were released on parole today from prisons in Maine and New Hampshire. Two other teenagers served prison sentences and have been released. Pamela Smart was 22 when her husband was killed. She is serving life in prison without the chance of parole. She admitted to seducing Flynn but insists she didn't plan her husband's murder. (Read more murder stories.)